Centrifugal liquid-heater.



H. 'FELDMEIER. CIENTRIFUGAI. LIQUID HEATER.

APPLICATION FILED MAY23, 1912,.

1 ,1 86, 1 75. Patented June 6, 1916.

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APPHCATIQN FILEDMAY 23, 1912- 1,-]. 86, 175. Patented June 6, 1916.

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M 7M fw fi? H. FELDMEIER. CENTRIFUGAL LIQUID HEATER. APPLICATIONJILED MAY 2a,' I912.

1 186, 1 75. Patented June 6, 1916.

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H. FELDMEIER. CENTRIFUGAL LIQUID HEATER. APPLICATION FILEDMAY 23, 1912.

1 1 86, 1 75 Patented June 6, 1916.

' 4 SHEETS-SHEET 4.

UNITED STATES PATENT OFFICE.

HARVEY FELDMEIER, OF LITTLE FALLS, NEW YORK, ASSIGNORTO H. BURRELL COMPANY, OF LITTLE FALLS, NEW YORK.

GENTRIFUGAL LIQUID-HEATER.

Specification of Letters Patent.

Application filed May 23, 1912. Serial No; 699,266.

To all whom it may concern:

Be it known that I, HARVEY FELDMEIER, a citizen of the United States, residing at Little,Falls, in the county of Herkimer and State of New York, have invented a new and useful Improvement in Centrifugal Liquidfication.

This invention relates to that class of liquid heaters which comprises a heated cylindrical vessel into which the liquid is fed at the bottom and from which it is discharged at the top, and a rotary agitator or beater which drives the liquid through the vessel in a thin layer or film by centrifugal force with a whirling motion in an upward direction, whereby the liquid is kept in close contact with the inner surface of the heated vessel and evenly distributed over the same and thoroughly heated and at the same time elevated by centrifugal force to a higher level, so that the apparatus works to a certain extent like a centrifugal pump.

The object of the invention is'to produce a heater of this character which is simple in construction and efficient in operation and 7 which can be readily taken apart for cleaning, this being an important consideration in heaters which are used for heating milk or cream in the process of pasteurization.

I In the accompanying drawings: Figure 1 is an elevation of this improved heater having its axis arranged vertically. Fig, 2 is a top plan view thereof. Fig. 3 is a sectional elevation of this heater, on an enlarged scale.

Fig. 4 is a plan view, partly in section, of thebottom of the heater looking upward, the section being taken on line 44, Fig. 3. Fig. 5 is a horizontal section through the top or delivery chamber of the heater on line 55, Fig. 3. Fig. 6 is a fragmentary vertical section, on an enlarged scale, of the top of the heater. Fig. 7 is a fragmentary vertical section, on an enlarged scale, of the bottom of the heater. Fig. 8 is a fragmentary side elevation of the lower portion of the heater, showing the inlet and outletpipes for the hot water.. Fig. 9 is a side elevation of the heater with its axis arranged in an oblique position. Fig. 10 is an end elevation, on a reduced scale. Fig. 11 is a fragmentaryvertical section of the driving mechanism.

Like reference characters refer to like parts in the several figures.

The heater comprises a cylindrical heating vessel A, a surrounding heating jacket B which is supplied with a suitable heating medium, for instance, hot water, andan outer air jacket C which protects or insulates the heating jacket. These parts may be arranged with their axis vertically, as repre: sentedin Figs. 1, 2 and 3, but in heaters of considerable capacity or depth they are preferably arranged with their axis oblique as represented in Figs. 911. It has been found in practice that the capacity of such a heater can be greatly increased by increasing the length or depth of theheating cylinder or centrifugal vessel without increasing its diameter, and that the increase in capacity is much greater in proportion than the increase in length or depth of the cylinder.

For illustration, a heater having a centrifugal vessel which'is twelve inches in diameter and twenty inchesin depth has approximately a heating capacity" of about 2000 pounds of milk per hour, while a heater of the same diameter but forty inches in depth was found to have a capacity of approximately 6000 pounds of milk per hour. This is probably due to the fact that there is considerable agitation in the milk at the bottom of the heating vessel where the heater or agitator first strikes the milk, in consequence of which condition the lower portion of the heater is not as eflicient as the upper portion where the milk has. been reduced to.

a uniform film or layer which travels with great speed over the heated surface of the cylinder.

In order to a deep machine the cylinder is arranged obliquely, as represented in Figs. 9-11, and

render it convenient-to clean Patented June 6, 1916.

cylinder and its adjuncts and the rotary agitator and driving mechanism are concerned,

is the same, whether the cylinder is arranged vertically or obliquely, and in order to simplify the representation the details of the construction are represented in connection with the vertical heater represented in Figs. 1-8.

The heating vessel comprises a peripheral wall or cylinder 22 and a bottom plate 23. The cylinder, which is preferably of tinned copper and stiffened by an. external spiral 1 is arranget'i.

re is see r d to 3h step bearing and wheel which is se 1 end of a horizontal. drii iliiltld in the frame 26 a s outer end with devices by power is applied, for instance,

a oose pulleys 4:6 '7

The centrifugal vesse communicates at its upper end with a delivery chamber D which is larger in diameter than the centrifugal vessel, so that the milk, as it escapes from the upper end of the centrifugal vessel, is hung outwardly by centrifugal force into this delivery chamber from which it is discharged by a tangential spout or pipe 50, Figs. 1, 2 and 5. The whirling movement of the liquid is maintained in the delivery chamber by wings 51 which are secured to the upper spider 36 and which are preferably more numerous than the wings in the centrifugal vessel. The enlarged delivery chamber permits of the free escape of the milk from the upper end of the centrifugal vessel and this serves to keep the whirling layer or film of milk in the vessel of substantially uniform thickness and unaffected by the head against which the milk is elevated by the machine and which may be greater or less in different pasteurizer systems. Furthermore, the enlarged chamber, by reason of its greater diameter, increases the centrifugal force with which the milk is discharged and increases the elevating power a spiral external rib 62.

of the machine. The discharge pipe communicates with the delivery chamber above the lower edges of the delivey wings iquld 51 so thatthe latter operate upon 1 in the delivery chamber and accelea need ther of.

She delivery chamber D co.

with an resse id to downwardly 1 formei on the bottom j e v chamber D, so that thi ently connected with the centri'ruga ssel.

The heating jacket l3 comprises a peripheral wall ill which is preferably st nened by The wall 61 is secured at its lower end by riveting and soldering or other suitable means to an up wardly projecting flange (33 formed on an annular bottom. head 6 and at its upper end to an annular top head. 65 which is provided with a downwardly projecting flange 66 for that purpose. The bottom head is secured to the bottom plate 23 by screws 67, Figs. 4L and 7, and a packing 68 is placed between the plate 23 and the bottom ring M.

The air jacket C comprises a peripheral wall 70 which is secured at its lower end. to the marginal edge of the bottom head 64 and at its upper end to the marginal portion of the annular top head 65. The latter is pr0- vided with an upwardly projecting cylindrical tongue 71 which extends into a corresponding groove 72 in the under side of th delivery chamber, in which groove the tongue can move up and down, thus forming a slip joint which permits the centrifugal vessel to expand and contractindependently trifugal vessel is arranged obliquely, as represented in Figs. 9-11, the working parts are of the same construction as in the vertical heater and the base frame 20 is arranged to support the lowerportion of the centrifugal vessel and connecting parts in an oblique position.

I claim as my invention:

1. A centrifugal liquid heater, comprising a cylindrical heating vessel having its axis arranged obliquely, means for heating said vessel, a rotary beater removably arranged in said vessel, a'base frame supporting the lower end of said vessel and holding said vessel permanently in an obllque position, driving mechanism for said beater arranged in said base frame, means for feeding the liquid to the lower end of said vessel and for discharging the heated liquid from the upper portion thereof, and a removable cover applied to the upper end of said vessel, substantially as set forth.

2. A centrifugal liquid heater, comprising a cylindrical heating vessel having its axis arranged obliquely, means for heating said vessel, a rotary beater arranged in said vessel, a base frame supporting the lower end of said vessel and holding said vessel permanently in an oblique position, driving mechanism for said beater arranged in said base frame, and supporting legs connected with the upper portion of said vessel, substantially asset forth.

3. The combination with a centrifugal heating vessel, a rotary beater arranged therein, means for feeding the liquid to the said vessel at one end and delivering the heated liquid therefrom at the other end, a surrounding heating jacket, an outer air jacket, an annular head to which said heating jacket and said air jacket are secured at one end, and an annular head to which the opposite ends of said jackets are secured and which is connected with said heating vessel by a slip joint, siibstantially as set forth.

4. The combination with a centrifugal heating vessel, a rotary beater arranged therein, means for feeding the liquid to the said vessel at one end and delivering the heated liquid therefrom at the other end, a surrounding heating jacket, an outer air jacket, an annular head to which said heating jacket. and said air jacket are secured at oneend, and an annular head to which the opposite ends of said jackets are secured and which is provided'with a. tongue having a sliding connection with said vessel, sub

stantially as set forth.

5. The combination with a centrifugal heating vessel, a, rotary beater arranged in the same, and means for feeding-the liquid 6. The combination with a centrifugal heating vessel, a rotary beater arranged in the same, means for feeding the liquid to the lower end of said vessel, a delivery chamber arranged at the upper end of said vessel and of larger diameter than said vessel, means for discharging the liquid ,from said chamber, a heating jacket surrounding said vessel, an outer air jacket, a bottom head to which said jackets are secured, and a top head to which said jackets are secured and which is provided with a tongue having a slip connection with said chamber, substantially as set forth.

7. The combination with a. heating vessel having a closed bottom and having an overhanging top portion provided in its underside with an annular groove, a rotary beater arranged in said vessel, means for feeding the liquid to the lower end of said vessel and for discharging the heated liquid from thetop thereof, a heating jacket surrounding said vessel, means for securing the lower 9. The combinationwith a centrifugal heating vessel having a closed bottom, ofa

surrounding heating jacket and an outer air jacket, an annular bottom head to which the lower ends'ofsaid jackets are secured and "which is detachably connected with the bottom of said centrifugal 'vessel,'and-an annular top head to which the upper ends of said .j ackets are secured and which is 'detachably connected with said vessel, substantially as set forth.

'Witness my hand in the presenceof two subscribing witnesses.

Witnesses:

. ."HARVEY FELDMEIEB.

Jnss' E. Mn1icHANr, Gm Palomino; 

